US Naval Academy mascots Bill 33, right, and Bill 34 stand on the sidelines as the Naval Academy dance team performs. (Jacqueline Larma/AP)

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Seven Army cadet

Seven Army cadet exchange students, who spent their first semester studying at the U.S. Naval Academy, cheer as they run off the field. (Jacqueline Larma/AP)

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Rivalry

Army cadets, top, call out Navy midshipmen as they march on the field before the Army Navy game Saturday in Philadelphia. (Matt Slocum/AP)

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Cadets

Army cadets shout before the game against the Navy Saturday in Philadelphia. (Matt Rourke/AP)

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Midshipmen

Navy midshipmen shout before the first half of an NCAA college football game against the Army, Saturday, Dec. 14, 2013, in Philadelphia. (AP Photo/Matt Rourke)

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Honor guard

A Navy honor guard marches onto the field before the game against Army Saturday in Philadelphia. (Matt Slocum/AP)

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Salute

Army cadets salute during the walk-on formation before the start of the Army-Navy game Saturday in Philadelphia. (Jacqueline Larma/AP)

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Proposal

Colin Joy, right, an Army offensive line reserve, proposes to Nicole Veroline on the field before the Army-Navy game, Saturday in Philadelphia. She said yes. (Matt Slocum/AP)

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Acceptance

Colin Joy, right, and Nicole Veroline kiss after Joy proposed to her on the field before the Army-Navy NCAA college football game, Saturday, Dec. 14, 2013, in Philadelphia. She said yes. The couple is from Long Island, N.Y. (Matt Slocum/AP)

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Shout

Army cadets shout before the game against Navy Saturday in Philadelphia. (Matt Slocum/AP)

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Midfield

Army cadets march onto the field before the Army Navy game Saturday in Philadelphia. (Matt Slocum/AP)

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Parade

Army cadets march onto the field before the game against Navy Saturday in Philadelphia. (Matt Rourke/AP)

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Cadet march

Army cadets are silhouetted as they march onto the field before the game against Navy Saturday in Philadelphia. (Matt Slocum/AP)